COMBINATION OF A COVER PLATE AND A DRAIN AND USE OF SUCH COMBINATION

Abstract

A combination of a cover plate and a drain, preferably a floor drain is described. The cover plate is provided with first locking means and the drain is provided with cooperating second locking means for releasable connection of the cover plate to the floor drain. The cover plate is a temporary cover plate for use during installation of the drain. The cover plate may be used for a temporary protection of a drain during installation of the drain and for installing and adjusting the inclination of the drain without the need of separate levelling tools. To obtain this the cover plate is provided with levelling means for determining the orientation of the cover plate and thereby also the drain in relation to a horizontal or a vertical plane. The first locking means or the second locking means comprises a weakening arranged such that at least a part of the locking means is preferably damaged when the cover plate is removed from the drain to ensure that the cover is not reused.

Claims

1. A combination comprising: a cover plate and a drain for a floor or roof drain, wherein the cover plate is provided with first locking means, and wherein the drain is provided with cooperating second locking means for releasable connection of the cover plate to the drain, and wherein the cover plate is provided with level means for determining the orientation of the cover plate and thereby also the drain in relation to a horizontal plane or a vertical plane.

2. The combination according to claim 1, wherein the first locking means or the second locking means comprises a weakening arranged such that at least a part of the locking means is damaged when the cover plate is removed from the drain as the cover plate is a temporary cover plate for use during installation of the drain.

3. The combination according to claim 1, wherein the level means is chosen between a bull's eye spirit level and a combination of two perpendicularly arranged tubular spirit levels.

4. The combination according to claim 3, wherein the level means comprises a bubble housing being provided with graduations for visual indication of an inclination.

5. The combination according to claim 1, wherein the cover plate is made of plastic, preferably polypropylene, and that the level means is embedded into the cover plate, preferably in a plane surface thereof.

6. The combination according claim 1, wherein the weakening is a weakening line, which is arranged to ensure that at least a part of the first locking means breaks off when the cover plate is removed.

7. The combination according to claim 1, wherein the the first locking means comprises locking tabs arranged along a circumferential edge of the cover plate and that the second locking means comprises a flange or a groove in the drain.

8. The combination according to claim 1, wherein the cover plate comprises at least one opening in which a tool can be inserted in order to tilt or rotate the cover plate.

9. The combination according to claim 8, wherein the tilting or rotation of the cover plate causes a damaging of locking means by a tilting or rotational movement of the cover plate for removing the cover plate from the drain.

10. The combination according to claim 8, wherein the opening is the cover plate is a slit in which a screw driver may be inserted.

11. The combination according to claim 1, wherein the drain is a drain bowl, a drain stub or other drain unit arranged for mounting in a floor or other horizontal surface from which liquid shall be drained.

12. The combination according to claim 2, wherein the cover plate is made by vacuum forming and comprising a circular part and a circumferential wall connected to the circular part and having a narrow portion at a distal end of the circumferential wall.

13. The combination according to claim 12, wherein at least one perforation is provided in the circumferential wall.

14. The combination according to claim 1, wherein the first locking means, is at least one slit which is provided in a recessed part of the surface of the cover plate, which recessed part via wall parts is connected to the surface of the cover plate, that the wall parts are provide with a wall opening connected with the slit, that the cooperating second locking means comprises a screw passing through a corresponding slit for connecting the cover plate to the drain, that the screw is screwed into a thread provided in the drain and that the slit and wall opening is arranged such that after loosening the screw a rotation of the cover plate brings the screw through the wall opening for releasing the connection of the cover plate to the drain.

15-16. (canceled)

Description

DESCRIPTION OF THE DRAWING

[0071] An embodiment to the invention will be described by way of example only and with reference to the accompanying drawings, in which

[0072] FIG. 1 shows a section through an embodiment of a drain,

[0073] FIG. 2 shows the drain of FIG. 1 as seen from above,

[0074] FIG. 3 shows an embodiment of a drain seen from above, and intended for use in combination with the drain of FIG. 1

[0075] FIG. 4 illustrates a view of the cover plate of FIG. 3 as seen from the side,

[0076] FIG. 5 shows a cross section IV-IV in FIG. 3,

[0077] FIG. 6 illustrates an enlarged detail of the cross section of FIG. 5,

[0078] FIG. 7 illustrates a perspective view of the cover plate illustrated in FIGS. 3-6 as seen from above

[0079] FIG. 8 illustrates a perspective view of the cover plate illustrated in FIG. 7 as seen from below,

[0080] FIG. 9 illustrates an initial step in removing the cover plate of FIGS. 3-8 from a drain according to FIGS. 1 and 2,

[0081] FIG. 10 shows an embodiment for level means to be used in the cover plate,

[0082] FIG. 11 shows a further embodiment for level means to be used in the cover plate,

[0083] FIG. 12 shows an embodiment of a bubble housing being a part of the level means,

[0084] FIG. 13 shows a further embodiment of a bubble housing being a part of the level means,

[0085] FIG. 14 shows a further embodiment for a cover plate,

[0086] FIG. 15 shows a further embodiment of a cover plate,

[0087] FIG. 16 shows a further embodiment for a cover plate,

[0088] FIG. 17 shows a further embodiment for a cover plate,

[0089] FIG. 18 corresponds to FIG. 9 and illustrates an initial step in removing the cover plate of FIG. 17 from a drain according to FIGS. 1 and 2,

[0090] FIGS. 19-21 illustrate a further embodiment of a cover plate and a drain according to the present invention,

[0091] FIG. 22 illustrate a cross sectional perspective view of a further embodiment of a cover plate and a drain, according to the present invention,

[0092] FIG. 23 illustrate a plan view of the cover plate illustrated in FIG. 22,

[0093] FIG. 24 illustrate a cross section through the cover plate illustrated in FIG. 22,

[0094] FIG. 25 illustrate a further cross section through the cover plate illustrated in FIG. 22, and

[0095] FIG. 26 illustrate an exploded view of the cover plate and the drain illustrated in FIG. 22.

DETAILED DESCRIPTION OF THE INVENTION

[0096] In the following text the figures will be described one by one and the different parts and positions seen in the figures will be numbered with the same numbers in the different figures. Not all parts and positions indicated in a specific figure will be discussed in connection with that figure.

[0097] FIG. 1 illustrates a drain 1 comprising a lower part 2, which is intended for connection with piping below the surface 3 in which the drain 2 is arranged. The drain comprises an upper end 4 having a flange 5 which is preferably a circumferential flange. The drain comprises a hole 6 which is intended for use with a screw used to fasten a grating (not illustrated) which is used for cover an upwardly opening 7 of the drain 1.

[0098] The flange 5 has a thickness 8 which is adjusted to the specific cover plate as explained later.

[0099] It is noted that there will always be an additional layer on top of a first pour which are made by the main contractor. The finish of a floor will be effected by a floor contractor.

[0100] Therefore a space will exists between the drain and the floor made by the first contractor and the space makes it possible to provide tabs for a cover plate as explained later. The space will be covered by the floor contractor.

[0101] When the floor contractor has finished the work the tabs of the cover plate covering the drain will be embedded in the finishing layer of the floor.

[0102] The drain can be produced from different materials. It can e.g. be made from plastic, metal cast iron, concrete, clay or other materials which are found suitable for manufacture of a drain.

[0103] In FIG. 2 it is seen that the flange 5 is a circular flange. However, it might have other configuration and it do not necessarily been to be a circumferential flange 5.

[0104] FIG. 3 illustrates a cover plate 9 which is used for covering the opening 7 of the drain 1. The cover plate 9 is provided with first locking means which are provided in form of locking tabs 10 which are arranged along a circumferential edge 11 of the cover plate 9. The locking tabs 10 cooperate with second locking means in form of the edge area 12 of the flange 5. As more clearly illustrated in FIGS. 4-6 one can see that the locking tabs 10 comprise a leg portion 25 connecting a wedge shaped outer end 13 with the plate portion 14 of the cover plate 9. The leg portion 25 is flexible and thereby provides the possibility that the locking tabs 10 may be pressed down over the flange 5 whereby the outer end 13 will enter into engagement with the edge area 12 at the downwardly orientated surface of the flange 5. Hereby the cover plate will be connected to the drain.

[0105] As most clearly illustrated in FIG. 6 the cover plate comprises a weakening line 15 connecting the locking tab 10 with the plate portion 14. Accordingly, the connection between the cover plate and drain is releasable, however, the locking tabs 10 will break off when the cover plate is removed from the drain as the lower end 13 will have engagement with the downwardly orientated surface of the flange 5 and therefore a breaking will occur along the weakening line 15.

[0106] The cover plate 9 is provided with openings 16. Each opening 16 may be slit-formed and intended for the engagement with a screw driver 17 as illustrated in FIG. 9. The screw driver is used for removing the cover plate 9 from the drain 1.

[0107] The cover plate comprises a hollow 18. The hollow 18 is intended to contain a level means 19 (see description below) which is intended for determining the orientation of the cover plate and thereby also the orientation of the drain 1 in relation to a horizontal plane or a vertical. The level means 19 may be fixed in the hollow 18 in different ways. The fixation is intended to be fixed and not removable in order to secure that the level means always will have a fixed orientation in relation to the cover plate 9.

[0108] The level means may be cast into the cover plate during production of the cover plate or may be attached in the hollow by gluing after the production of the cover plate with the hollow 18.

[0109] FIGS. 7 and 8 illustrate an enlarged perspective view of the cover plate as seen from above and from below. Reference numbers are inserted in order to more clearly indicate the elements already explained in connection with FIGS. 3-6.

[0110] FIG. 9 illustrates a situation in which screw drivers 17 are inserted into the openings 16. When a bending force is exerted with the screw driver there will easily be a tilting of the cover plate which causes the breaking of the locking tabs along the weakening line.

[0111] FIGS. 10-11 illustrate embodiments for level means 19. The level means 19 comprises a housing 20 which is intended for being fixed in the hollow 18 in the cover plate 9.

[0112] In FIG. 10 the level means comprise two perpendicularly arranged tubular spirit levels 21. Each of the levels comprises a bubble 22 and graduation 23 for visual indication of inclination.

[0113] FIG. 11 illustrates a bull's eye spirit level 24. This bull's eye spirit level also comprises a bubble 22 and graduations 23 for visual indication of an inclination.

[0114] FIG. 12 illustrates a straight tubular spirit level having a uniform diameter, however, having a curvature.

[0115] FIG. 13 illustrates an embodiment with a straight tubular spirit level in which the central part is increased compared to the diameter of the outer ends of the tubular spirit level.

[0116] The embodiments of FIGS. 12 and 13 may be used in the level means 19 illustrated in FIG. 10.

[0117] FIG. 14 illustrates a cover plate 9 having openings 16 for a screw driver and a hollow 18 for containing a level means.

[0118] This embodiment comprises first locking means in the form of tabs 26 which through weakening lines 27 are connected to the main part of the cover plate 9. The tabs will have a part arranged to engage under the flange of the drain.

[0119] When inserting screw driver in the opening 16 and exerting a force, the tabs 26 will break off by a breaking at the weakening line. The tab 26 will have a form as explained with the locking tabs 10 above.

[0120] FIG. 15 corresponds to FIG. 14. The cover plate according to FIG. 15 is provided with two rectilinear hollows 28 instead of the circular hollow 18 illustrated in FIG. 14. The hollows 28 are provided directly in the cover plate 19 and are intended for containing tubular spirit level 21 of the type illustrated in FIG. 12 or 13.

[0121] FIG. 16 illustrates a further embodiment for a cover plate 9. The cover plate 9 is provided with with first locking means in form of tabs 29. The tabs will have a part arranged to engage under the flange of the drain. The tabs are provided with a pull eye 30 in which a finger can be inserted. Accordingly, the tab 29 can be denoted as a pull tab. The tab 29 is connected with the main part of the cover plate 9 through a weakening line 31.

[0122] When inserting a finger in the pull eye 30 it is possible to remove the tab 29.

[0123] Accordingly, this cover plate may be removed without the use of a screw driver.

[0124] FIG. 17 illustrates a cover plate 9 being provided with tabs 32. Tabs 32 are connected with the main part of cover plate 9 through a weakening line 33 which leaves an opening 34 between the tab 32 and the main part of the cover plate. The opening 34 can be used for inserting a screw driver.

[0125] FIG. 18 illustrates the embodiment of FIG. 17 in which the screw driver 17 is inserted in the opening 34 in order to remove the tab 32 from the remainder of the cover plate. FIGS. 19-21 illustrate a further embodiment of a cover plate and a drain according to the present invention.

[0126] In the cross section in FIG. 19 one can see that the cover plate 9 is provided with a circular part 40 and a circumferential wall 35 connected with the circular part of the cover plate.

[0127] The circumferential wall has at a distal end a narrow portion 39 which has a diameter which is smaller than the diameter of the circumferential wall arranged close to the circular part. Hereby the narrow portion 39 can enter into engagement under the flange 4. In the embodiment illustrated a clamping membrane 36 is arranged between the flange 4 and the circular part of the cover plate 9.

[0128] In the top view illustrated in FIG. 20 one can see that the cover plate is provided with weakenings in form of incisions 37 arranged with regular distance around the circumference where the circular part is connected with the circumferential wall. The incisions make it easier that the circumferential wall is divided into different portions which can easily be bent away when removing the cover plate from the drain 1.

[0129] From the perspective view illustrated in FIG. 21 one can see that the circumferential wall 35 is provided with a weakening line 38. The weakening line 38 makes it easier to damage the circumferential wall in order to remove it from the drain.

[0130] In the above embodiments the tabs provided in the cover plate will have the form corresponding to the locking tabs 10 disclosed in FIG. 4-6. However, other embodiments for locking tabs are possible if they ensure a secure engagement with the drain 1 during installation.

[0131] FIGS. 22-26 illustrate a further embodiment for a combination of a drain 1 and a cover plate 9.

[0132] In these Figures the first locking means is provided in form of a slit 41 which is provided in a recessed part 42 of the top surface 43 of the cover plate 9. The recessed part 42 is connected with the top surface 43 through wall parts 44.

[0133] Especially from FIG. 22 a wall opening 22 is visible. The wall opening 45 is in connection with the slit 41. One can say that the slit 41 will open into the wall opening.

[0134] The slit 41 is at a end portion provided with a chamfer 46 which allow a flat head screw 47 to sit in. The screw 47 is the screw which is used for connecting a grate 49 to the drain 1 by being screwed into threads 48 provided in the drain.

[0135] Accordingly, the cover plate here will make use of elements, namely the screws 47 which are already present in the product for attaching the cover plate to the drain. There may be provided any number of screws.

[0136] Before placing the cover plate on the drain the screws 47 will not be tightened totally. Hereby the cover plate may be arranged on top of the grate 49 and rotated in such a way that the screws enter through the wall opening 45 and into the slit 41. The slit will have a part circular form in order to have a smooth rotation. When the screws are aligned with the chamfer 46 they will be tightened. Hereby the cover plate is affixed to the drain 1. As the cover plate 9 is in contact with the grating a secure orientation of the cover plate and the grating is established whereby the level means 19 arranged in the opening 18 is ready for use when aligning the drain.

[0137] After the cover plate is arranged a protective sheet 50 having a form corresponding to the form of the surface of the cover plate 9 may be glued to the cover plate. Hereby it is secured that the cover plate may not unintentional be removed from the drain.

[0138] When the cover plate shall be removed from the grating the protective sheet 50 is broken or torn away. Hereby it is possible to loosen the screws 47 and effect a rotation of the cover plate whereby the screws pass through the slit and enter through the wall opening 45. Hereby it is possible to remove the cover plate 9 from the drain 1.

POSITION NUMBER LIST

[0139] 1 drain [0140] 2 lower part [0141] 3 surface [0142] 4 upper end [0143] 5 flange [0144] 6 hole [0145] 7 opening [0146] 8 thickness [0147] 9 cover plate [0148] 10 locking tabs [0149] 11 circumferential edge [0150] 12 edge area [0151] 13 outer end [0152] 14 plate portion [0153] 15 weakening line [0154] 16 opening [0155] 17 screw driver [0156] 18 hollow [0157] 19 level means [0158] 20 housing [0159] 21 tubular spirit level [0160] 22 bubble [0161] 23 graduation [0162] 24 bull's eye spirit level [0163] 25 leg portion [0164] 26 tab [0165] 27 weakening line [0166] 28 hollow [0167] 29 tab [0168] 30 pull eye [0169] 31 weakening line [0170] 32 tab [0171] 33 weakening line [0172] 34 opening [0173] 35 circumferential wall [0174] 36 clamping membrane [0175] 37 incision [0176] 38 weakening line [0177] 39 narrow portion [0178] 40 circular part [0179] 41 slit [0180] 42 recessed part [0181] 43 top surface of cover plate [0182] 44 wall parts [0183] 45 wall opening [0184] 46 chamferin slit [0185] 47 screw [0186] 48 thread [0187] 49 grate [0188] 50 protective sheet